US 12,085,724 B1
Waveguide deformation sensing
Scott M DeLapp, San Diego, CA (US); Hyungryul Choi, San Jose, CA (US); and Vikrant Bhakta, Santa Clara, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 31, 2023, as Appl. No. 18/326,400.
Claims priority of provisional application 63/353,335, filed on Jun. 17, 2022.
Int. Cl. G02B 27/01 (2006.01); G02B 6/10 (2006.01)
CPC G02B 27/0176 (2013.01) [G02B 6/102 (2013.01); G02B 27/0172 (2013.01); G02B 2027/011 (2013.01); G02B 2027/0178 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
a waveguide;
an input coupler on the waveguide and configured to couple light into the waveguide;
a first output coupler on the waveguide and configured to couple a first portion of the light out of the waveguide;
a second output coupler on the waveguide and configured to couple a second portion of the light out of the waveguide, wherein the first output coupler is configured to pass the second portion of the light to the second output coupler;
an image sensor configured to generate image sensor data based on the second portion of the light coupled out of the waveguide by the second output coupler; and
one or more processors configured to detect a deformation of the waveguide based on the image sensor data.